Random/mysterious resistor identification

[audiophile]

Trying to identify a resistor.
5 band, but 3rd doesn't make sense as silver
Also wondering what type as I've been reading too much.

Anyone knowledgeable and confident identifying it?
Lightning damage in a retail Moxi DVR

[Axegrinder87]

26.8 or 36.8 ohm. Can't tell if that first band is red or orange.

You are correct that silver doesn't make sense. But it's supposed to be gray, they use silver so you can see it against the case color.

For 5 band resistors like yours, 1st through 3rd band are digits, the 4th is the multiplier. Gold multiplier is x0.1. Green tolerance band is +/- 0.5%

Looks like an 1/8 watt resistor too. But the picture is so zoomed it's hard to judge properly.

That's a very precise resistor. Unless you do this for a living, don't feel bad.

[audiophile]

It's orange, so 36.8 then.


Nope, not my forte, but ever since I on a whim researched and fixed a dead 40" LCD TV with a $1 capacitor, I'm an expert now LOL. And considering they are my roomates gear, and would never be repaired (he'd rather toss and buy new) they're already expendable experiements. I eithere win or waste time.

Macro FTW heh, Here's a wide angle, resistor in center

[Axegrinder87]

Ok, looks pretty large now. I'd say 1/2 watt. Measure it with a ruler to be sure.

[audiophile]

bout 1cm

[Axegrinder87]

1/4 watt then. Sorry it's so hard to tell not in person.

[Rsmacker]

Come on then, what's the rhyme you used to remember the colours? I'm not going to post mine, it's offensive from the first letter...

[Jayster]

bad boys rape young girls but violet gives it willingly?

[Hellbat]

bad boys rape OUR young girls but violet gives willingly?

Fixed

Black
Brown
Red
Orange
Yellow
Green
Blue
Violet
Gray
White

[Axegrinder87]

I honestly don't use a rhyme. I used do this shit all day, for years, so it's just like reading a book.

[Jayster]

thanks Drew, it's been a minute.....

[audiophile]

LOL
On a side note, no luck in brief search for an exact match replacement.

[Hellbat]

My grade 8 electronics teacher would be so proud I remember his mnemonic to this day hehe.

[audiophile]

Returning to this issue as I never found, or searched hard enough for an exact replacement.
Would like some input on this option.

I just happened to get into a conversation today with a guy on craigslist who was posting about capacitor repair in Tivo DVRs, and he suggested to run these two in parallel. (both available from radio shack)

NTE 1W068-10 - Resistor-1W 68 Ohm 2%
NTE 1W082-10 - Resistor-1W 82 Ohm 2%

The end result comes to 37.1733 Ohms, close but not exact (36.8). Plus the Wattage values and tolerance is even more off. Good? OK? Keep hunting?

Using an online calculator, and entering in original values 36.8 Ohms / 0.5 Watt, then adding 68 Ohms as first resistor of choice for a parallel circuit, it tells me that 68 Ohm resistor should be 0.27058823529411763 Watts
and the 2nd should be 80.20512820512819 Ohms and 0.22941176470588237 Watts

I believe I understand a larger wattage is fine, tolerance not necessarily.

Calculating the tolerance I get
Old vs New
+/-0.184 Ohm vs +/-0.7435 Ohm

About 4x wider.
Hmm. Unless I can use this (68 & 82) and find same value resistors with tighter tolerances

[Twitch]

It depends on what that circuit is doing. If its some kind of processing, keep looking, if its amplification or power related, it may work fine, but considering the combination is not the right value to begin with and then the extra 2% either way, it may cause undesirable operation if error is on the high side. Id buy a few of them and test them on a MM and pick the two that are in their 2%, underrated(meaning they test close to rated or less). Otherwise, keep looking.

[audiophile]

Pretty sure it's only power section. It's a completely separate/isolated circuit board from the main.

Rather complex looking (from my point of view), but connects to the main board with only a (7) wired plug, labeled (2) ground, (2) 12v, (1) 3.3v, (1) 'port' and (1) 'pg'.

I will keep digging for other resistor combinations regardless.